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13.32 MB2022-01-19
131.49 MB2021-12-29
114.26 MB2021-12-29
[国外标准] ASTM E2709-19 Demonstrating Capability to Comply with an Acceptance Procedure
8.51 MB2021-12-22
[国外标准] ASTM D4929-19a Standard Test Method for Determination of Organic Chloride Content in Crude Oil
22.73 MB2021-12-22
[国外标准] ASTM B861-19 Standard Specif i cation for Titanium and Titanium Alloy Seamless Pipe
9.57 MB2021-12-22
[国外标准] ASTM B536-19 Standard Specif i cation for Nickel-Iron-Chromium-Silicon Alloys Plate, Sheet, and Stri
3.08 MB2021-12-22
49.77 MB2021-08-09
542.19 KB2021-06-24
2.82 MB2021-06-23
6.67 MB2021-06-01
256.1 KB2021-05-07
8.2 MB2021-03-02
15.92 MB2021-01-13
403.37 KB2020-12-24
475.02 KB2020-12-07
[国外标准] DIN 13-19-1986 Chem Codes Chemical of Concern DCF Rejection Code FATE
77.61 KB2020-12-05
[国外标准] NEMA ICS 19-2002(R2007) Diagrams, Device Designations, and Symbols for Industrial Control and System
1.37 MB2020-12-03
[国外标准] BS EN 61558-2-19-2001 Safety of power transformers, power supply units and similar devices — Part 2-
303.19 KB2020-12-01
[国外标准] SS EN 60745-2-19-2005 Safety of hand-held motor-operated electric tools - Part 2-19 Particular requi
131.8 KB2020-11-30
[国外标准] EN 301 489-19-2002 Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic C
60.41 KB2020-11-30
[国外标准] CEI EN 60617-7 (1998) [CEI 3-19] Segni grafici per schemi Parte 7 Apparecchiature e dispositivi di c
509.22 KB2020-11-30
[国外标准] AWS A5.19-92 Specification for Magnesium Alloy Welding Electrodes and Rods R(1997)
2.7 MB2020-11-28
[国外标准] BS EN 19-2002 通用工业阀门标记 Industrial valves. Marking of metallic valves
113.19 KB2020-11-28